That made it 1-all in the second set, but there would be no comeback. Williams hit 12 aces, including four in one game, and enjoyed a 40-6 advantage in winners.

Radwanska, who also lost to Williams in last year's Wimbledon final, fell to 1-11 against No. 1 players.

The earlier semifinal was just as lopsided. On a sunny, mild afternoon, Sharapova won the first 10 points against the No. 22-seeded Jankovic, then hardly let up from there.

Sharapova swept seven consecutive games during one stretch, and committed only 10 unforced errors from the baseline in 88 points while breaking serve six times.

Sharapova took the Indian Wells title two weeks ago and has won 22 consecutive sets, a career best, while winning 11 matches in a row.

Williams said her final against Sharapova should be a crowd-pleaser.

"She's playing so well," Williams said. "I'll do the best I can. It'll be a good match. We love playing against each other. I love playing her and we always have a great match."

Like Williams, Sharapova survived a sloppy quarterfinal, winning despite 57 unforced errors, including 13 double-faults. She double-faulted only three times against Jankovic and won 23 of 25 points on her first serve.

"I just really thought I needed to step it up from my last match and play a little better," she said. "I was really happy with the way I focused."

Jankovic, playing for the second time in less than 18 hours, was repeatedly a step late trying to reach Sharapova's shots.

Jankovic questioned scheduling that forced her to play in consecutive sessions while Williams and Radwanska had a day off before the semifinals.

"Kind of crazy," she said. "I had a couple of hours of sleep, and then I had to be back on the court."

Sharapova looked fresh even though she has played a lot of tennis lately. She's bidding to become the third woman to win Indian Wells and Key Biscayne in the same year.

Steffi Graf did it in 1994 and 1996, and Kim Clijsters won both in 2005.

"Winning a title on its own, whether it's here or Indian Wells, is a great achievement," Sharapova said. "To be able to come back from that and recover in just a few days and come back to the final here, it's great. Physically, many years ago I wouldn't be able to do that, so I'm very proud of the way I have recovered."